﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace common
{
    /// <summary>
    /// 配置参数的相关操作。
    /// </summary>
    class FileIni
    {
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
        [System.Runtime.InteropServices.DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, System.Text.StringBuilder retVal, int size, string filePath);
        private string sPath = null;

        /// <summary>
        /// 配置文件路径。
        /// </summary>
        /// <param name="path"></param>
        public FileIni(string path)
        {
            this.sPath = path;
        }
        /// <summary>
        /// 写参数。
        /// [CFG]
        /// DebugOpen=True
        /// </summary>
        /// <param name="section">section名称，示例中的 CFG</param>
        /// <param name="key">key字段，DebugOpen</param>
        /// <param name="value">True</param>
        public void WriteValue(string section, string key, string value)
        {
            // section=配置节，key=键名，value=键值，path=路径
            WritePrivateProfileString(section, key, value, sPath);
        }
        /// <summary>
        /// 读参数。
        /// </summary>
        /// <param name="section"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        public string ReadValue(string section, string key)
        {
            // 每次从ini中读取多少字节
            System.Text.StringBuilder temp = new System.Text.StringBuilder(255);
            // section=配置节，key=键名，temp=上面，path=路径
            GetPrivateProfileString(section, key, "", temp, 255, sPath);
            return temp.ToString();
        }
    }  
}